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I will check but I did not think the red light on the RAM (high voltage control) would come on unless that air flow switch was off (as well as flue pressure, water flow,high limit and operating switches). Also I think I hear the spark but do not see the flame.
As I asked in the "optional info", Do you think my trying to test with a small shop vac blower is too much air? Book says air switch should be 1.1" W.C. What is W. C. Maybe Water Column?